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Finding the Fourth Proportional to 378,909.66, 567,979.90 and 323,606.58

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Solution

The fourth proportional to 378,909.66, 567,979.90 and 323,606.58 is: 485,081.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,909.66 : 567,979.90 = 323,606.58 : x
  2. Step 2: Convert to fraction form
    378,909.66/567,979.90 = 323,606.58/x
  3. Step 3: Cross multiply
    378,909.66x = 567,979.90 × 323,606.58
  4. Step 4: Simplify right side
    378,909.66x = 183,802,030,008.80
  5. Step 5: Solve for x
    x = 183,802,030,008.80/378,909.66
  6. Step 6: Final answer
    x = 485,081.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.